HD GLASS by David Andrew and Company is a revolutionary Digital LED product designed to attach directly to existing glass. Scalable to any size building or group of windows, means we can literally create the worlds largest TV. No Construction cost makes the cost of these LED sign a fraction of traditional signs. Another exclusive feature is that HD GLASS is 80% transparent. While potential customers are watching your HD GLASS you will be watching them! Call for a Demo today 1(877)94 1CREW(2739) In addition to being a traffic stopper this glass is programed wirelessly and is combined with preemptive mobile marketing. Delivering corresponding mobile messages to consumers viewing HD GLASS gives HD GLASS more than 25% additional effectiveness!